Channel transmission method, apparatus, base station and terminal

Abstract

The present disclosure discloses a channel transmission method and apparatus, a base station and a terminal. The method includes: a base station transmits a downlink channel to a terminal according to transmission information of the downlink channel; the base station receives a feedback channel transmitted by the terminal according to transmission information of the feedback channel, and combines and decodes the feedback channel, wherein the feedback channel is used by the terminal to feed back ACK to the base station after correctly receiving the downlink channel. By means of the feature of small transmission data or signaling of the terminals in the M2M, when scheduling the terminal, the base station directly transmits one kind of downlink channel, thus the system overhead is reduced; correspondingly, electric energy of the terminals is saved.

1 . A channel transmission method, comprising:
 transmitting, by a base station, a downlink channel to a terminal according to transmission information of the downlink channel; and   receiving, by the base station, a feedback channel transmitted by the terminal according to transmission information of the feedback channel, and combining and decoding the feedback channel, wherein the feedback channel is used by the terminal to feed back a receiving acknowledgement ACK to the base station after the terminal receives the downlink channel correctly.   
     
     
         2 . The method of  claim 1 , wherein,
 the transmission information of the downlink channel at least comprises a number of transmissions of the downlink channel; and   the transmission information of the feedback channel at least comprises a number of transmissions of the feedback channel.   
     
     
         3 . The method of  claim 2 , wherein,
 the transmission information of the downlink channel further comprises at least one of the following information: a time domain resource, or a frequency domain resource, or a time domain and frequency domain resource capable being selected to be occupied by the downlink channel; a modulation format adopted by the downlink channel; and an encoding format adopted by the downlink channel; and   the transmission information of the feedback channel further comprises at least one of the following information: a time domain resource, or a frequency domain resource, or a time domain and frequency domain resource occupied by the feedback channel; a modulation format adopted by the feedback channel; and an encoding format adopted by the feedback channel.   
     
     
         4 . The method of  claim 1 , wherein a preset relationship exists between the feedback channel transmitted by the terminal and the downlink channel;
 wherein the preset relationship comprises one of: a time domain resource for transmitting the feedback channel corresponds to a time domain resource for transmitting the downlink channel, or a frequency domain resource for transmitting the feedback channel corresponds to a frequency domain resource for transmitting the downlink channel, or a time domain and frequency domain resource for transmitting the feedback channel corresponds to a time domain and frequency domain resource for transmitting the downlink channel.   
     
     
         5 . The method of  claim 1  wherein one of: a time domain resource, or a frequency domain resource, or a time domain and frequency domain resource of the feedback channel transmitted by the terminal comprises a time domain resource, or a frequency domain resource, or a time domain and frequency domain resource notified by the base station. 
     
     
         6 . The method of  claim 5 , wherein the time domain resource, or the frequency domain resource, or the time domain and frequency domain resource of the feedback channel transmitted by the terminal comprises the time domain resource, or the frequency domain resource, or the time domain and frequency domain resource notified by the base station through the downlink channel. 
     
     
         7 . The method of  claim 2 , wherein the receiving a feedback channel transmitted by the terminal, comprises:
 receiving the feedback channel repeatedly transmitted by the terminal after all downlink channels are repeatedly transmitted, or receiving the feedback channel repeatedly transmitted by the terminal after a part of the downlink channels are repeatedly transmitted; wherein the receiving the feedback channel repeatedly transmitted by the terminal after a part of the downlink channels are repeatedly transmitted, comprises: dividing all downlink channels to be repeatedly transmitted into multiple groups, receiving the feedback channel repeatedly transmitted by the terminal after each group of downlink channels is repeatedly transmitted, until the ACK is received or the multiple groups of downlink channels are transmitted.   
     
     
         8 . The method of  claim 1 , wherein the downlink channel comprises one of: a downlink data channel used for transmitting data, and a downlink control channel used for transmitting signaling;
 wherein the signaling comprises control signaling for scheduling uplink transmission, or MAC signaling.   
     
     
         9 . The method of  claim 1 , wherein before the transmitting, by a base station, a downlink channel to a terminal according to transmission information of the downlink channel, the method further comprises:
 padding, by the base station, an original information bit of data or signaling whose length is smaller than a datum length and which is transmitted by the downlink channel, for enabling the length of the padded data or signaling to reach the datum length.   
     
     
         10 . The method of  claim 1 , wherein data or signaling transmitted by the downlink channel comprises packet header information, wherein the packet header information comprises at least one of the following information: an original length of the data or signaling, and a type of the data or signaling. 
     
     
         11 . A channel transmission method, comprising:
 receiving, by a terminal, a downlink channel transmitted by a base station according to transmission information of the downlink channel;   combining and decoding or blindly decoding, by the terminal, the received downlink channel; and   transmitting, by the terminal, a feedback channel to the base station according to transmission information of the feedback channel, wherein the feedback channel is used by the terminal to feed back ACK to the base station after the terminal determines, according to a blind decoding result that, the downlink channel is received correctly.   
     
     
         12 . The method of  claim 11 , wherein,
 the transmission information of the downlink channel at least comprises a number of transmissions of the downlink channel; and   the transmission information of the feedback channel at least comprises a number of transmissions of the feedback channel.   
     
     
         13 . The method of  claim 12 , wherein,
 the transmission information of the downlink channel further comprises at least one of the following information: a time domain resource or a time domain and frequency domain resource capable being selected to be occupied by the downlink channel; a time domain resource or a time domain and frequency domain resource used by the terminal for transmitting the feedback channel; a modulation format adopted by the downlink channel; and an encoding format adopted by the downlink channel; and   the transmission information of the feedback channel further comprises at least one of the following information: a time domain resource or a time domain and frequency domain resource occupied by the feedback channel; a modulation format adopted by the feedback channel; and an encoding format adopted by the feedback channel.   
     
     
         14 . The method of  claim 11 , wherein a preset relationship exists between the feedback channel transmitted by the terminal and the downlink channel;
 wherein the preset relationship comprises one of: a time domain resource for transmitting the feedback channel corresponds to a time domain resource for transmitting the downlink channel, or a frequency domain resource for transmitting the feedback channel corresponds to a frequency domain resource for transmitting the downlink channel, or a time domain and frequency domain resource for transmitting the feedback channel corresponds to a time domain and frequency domain resource for transmitting the downlink channel.   
     
     
         15 . The method of  claim 11 , wherein a time domain resource, or a frequency domain resource, or a time domain and frequency domain resource of the feedback channel transmitted by the terminal comprises a time domain resource, or a frequency domain resource, or a time domain and frequency domain resource notified by the base station. 
     
     
         16 . The method of  claim 15 , wherein the time domain resource, or the frequency domain resource, or the time domain and frequency domain resource of the feedback channel transmitted by the terminal comprises the time domain resource, or the frequency domain resource, or the time domain and frequency domain resource notified by the base station through the downlink channel. 
     
     
         17 . The method of  claim 12 , wherein the transmitting a feedback channel to the base station, comprises one of:
 transmitting repeatedly the feedback channel to the base station after the base station repeatedly transmits all downlink channels, and transmitting repeatedly the feedback channel to the base station after the base station repeatedly transmits a part of the downlink channels; wherein,   the transmitting repeatedly the feedback channel to the base station after the base station repeatedly transmits a part of the downlink channels, comprises: repeatedly transmitting the feedback channel to the base station, after the base station divides all downlink channels to be repeatedly transmitted into multiple groups and each group of downlink channels is repeatedly transmitted.   
     
     
         18 . The method of  claim 11 , wherein the downlink channel comprises one of: a downlink data channel used for transmitting data, and a downlink control channel used for transmitting signaling;
 wherein, the signaling comprises control signaling for scheduling uplink transmission, or MAC signaling.   
     
     
         19 . The method of  claim 11 , further comprising: when data or signaling transmitted by the downlink channel is the data or signaling obtained by the base station by padding an original information bit of the data or signaling whose length is smaller than a datum length and which is transmitted by the downlink channel to enable the length to reach the datum length, wherein packet header information of the padded data or signaling comprises at least one of the following information: an original length of the data or signaling, and a type of the data or signaling;
 wherein the combining and blindly decoding the received downlink channel, comprises: decoding the combined downlink channel according to the datum length of the data or signaling; and   the method further comprises: when the blind decoding is correct, reading one of: the packet header information of the data; and signaling to obtain respective original information of the data or signaling.   
     
     
         20 . A base station, comprising: a transceiver and a processor, wherein,
 the processor is configured to transmit a downlink channel to a terminal through the transceiver according to transmission information of the downlink channel, receive a feedback channel transmitted by the terminal through the transceiver according to transmission information of the feedback channel, and combine and decode the feedback channel, wherein the feedback channel is used by the terminal to feed back a receiving acknowledgement ACK to the base station after the downlink channel is correctly received.